Personally, I fondly envision some coherent amalgam of the
M&M gang: Market Monetarists (NGDPers) and Modern Monetary
Theorists (with a decent dose of the Austrian’s insight into
real-economy production and productivity). I’m guessing that some
have already ventured (some parts of) this amalgamation, quite
possibly in posts I’ve already read and since forgotten.
Thoughts? Links?

(Even as I post this I find that vimothy, JKH, and Steve Randy
Waldman are worrying productively at parts of this very question
in the comments here.)